CN104043832B - A kind of device controlling metal increasing material forming surface quality - Google Patents

A kind of device controlling metal increasing material forming surface quality Download PDF

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Publication number
CN104043832B
CN104043832B CN201410273921.5A CN201410273921A CN104043832B CN 104043832 B CN104043832 B CN 104043832B CN 201410273921 A CN201410273921 A CN 201410273921A CN 104043832 B CN104043832 B CN 104043832B
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China
Prior art keywords
worm screw
guide pillar
screw column
crossbeam
vertical beam
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Expired - Fee Related
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CN201410273921.5A
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Chinese (zh)
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CN104043832A (en
Inventor
杜军
魏正英
陈祯
赵光喜
李素丽
魏培
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Nanjing Honny 3d Technology Development Co., Ltd.
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Nanjing Honny 3d Technology Development Co Ltd
Xian Jiaotong University
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Publication of CN104043832A publication Critical patent/CN104043832A/en
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  • Powder Metallurgy (AREA)

Abstract

A kind of device controlling metal increasing material forming surface quality, comprise the worm screw column that Worm-gear assembly can be driven to rotate, worm screw column inside is provided with the guide pillar stretching out worm screw column lower end, and guide pillar stretches out and is also provided with for realizing shaping shower nozzle on one end of worm screw column lower end; Being provided with the crossbeam that can move along guide pillar axial direction due on described Worm-gear assembly, crossbeam is provided with the vertical beam that can move along guide pillar radial direction, the lower end of vertical beam is provided with can freely rotate and can be covered by forming part surface profile and flat covers flat roller. The present invention adopts when molten metal or molten drop do not solidify completely covers flat roller structure, piece surface is covered flat avoid metal trickling cause surface rough and and the problem such as Forming Quality difference, it is to increase forming parts precision and secondary processing.

Description

A kind of device controlling metal increasing material forming surface quality
Technical field
The invention belongs to metal three-dimensional and increase material manufacture field, be specifically related to a kind of device controlling metal increasing material forming surface quality.
Background technology
Increase material manufacturing technology (being also called " 3D printing ") and change traditional production and mode of life fast, its core concept is that 3 d part is carried out two-dimensional discrete, form sheet layer data, according to the individual-layer data of the three-dimensional CAD model of part, the formed material of discrete is progressively combined in together, formed and divide layer cross section one by one, then pile up by layer and form entity component, it is not necessary to mould, direct finished parts, can greatly reduce costs, shorten the lead time. At present, the metalwork of relative maturity increases material manufacturing technology and mainly contains laser fast shaping, such as precinct laser melting (SelectiveLaserMelting, SLM), direct metal sintering (DirectMetalLaserSintering, DMLS) and laser only closely shaping (LaserEngineeringNetShaping, LENS); Electron beam rapid shaping, such as electron beam melting (ElectronBeamMelting, EBM), and electron beam entity free forming (ElectronBeamFreeformFabrication, EBF); Plasma rapid shaping, as plasma solvent directly manufactures (PlasmaPowderDepositionManufacturing, PPDM); The molten long-pending rapid shaping of electric arc, manufacturing technology (ArcDirectRapidPrototypingManufacturing, ADRPM) as direct in electric arc etc.
Increasing in material manufacturing technology, the manufacturing processed of part realizes processing by the mode of " being layering ", first the three-dimensional model of stl file form is carried out two-dimensional discrete, and then is piled into three dimensional practicality by two-dimensional discrete data.Therefore, the contour surface of part can stay a large amount of in stair shape step, cause the piece surface of actual piece surface and expectation to have bigger difference, and then affect the surface quality of part. This kind of phenomenon is referred to as step effect, step effect is that the intrinsic forming principle owing to increasing material manufacturing technology brings, and causes the problems such as forming part finish size is inaccurate, formation of parts surface irregularity cannot meet service requirements, forming part surface quality difference. At present, can only reduce, by optimizing the fabrication direction of part, the surface quality that step effect improves product, or make piece surface smooth by aftertreatment secondary processing correction of the flank shape. Process optimization can only partly improve Forming Quality, cannot thoroughly deal with problems; Aftertreatment is complex process often, causes piece surface stress relief, cause part deformation after secondary processing.
Summary of the invention
It is an object of the invention to provide a kind of device controlling metal increasing material forming surface quality, this device can improve forming parts precision and Workpiece fixing is convenient in use.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: comprise the worm screw column that Worm-gear assembly can be driven to rotate, worm screw column inside is provided with the guide pillar stretching out worm screw column lower end, and guide pillar stretches out and is also provided with for realizing shaping shower nozzle on one end of worm screw column lower end; Being provided with the crossbeam that can move along guide pillar axial direction due on described Worm-gear assembly, crossbeam is provided with the vertical beam that can move along guide pillar radial direction, the lower end of vertical beam is provided with can freely rotate and can be covered by forming part surface profile and flat covers flat roller.
Described shower nozzle maybe can provide the molten drop shower nozzle of metal molten drop for laser coaxial powder feeding shower nozzle.
Described crossbeam is provided with and crossbeam can be driven to move axially the crossbeam motor of movement along guide pillar, and vertical beam is provided with the vertical beam motor that vertical beam can be driven along guide pillar radial motion.
Described worm screw column top is provided with the column motor that worm screw column can be driven to rotate.
The described flat roller that covers adopts pottery and graphite to make.
The described flat roller that covers adopts polar coordinates mode of motion.
Described Worm-gear assembly is arranged on worm screw column by bearing.
Compared with prior art, the useful effect of the present invention is:
Material former supports the use with increasing in the present invention, it may also be useful to time does not change and increases the original manufacturing process principle of material former, but is processed by piece surface in forming process, it is to increase forming quality, is the one increasing material former supplemented. And, what the increasing material shaping of apparatus of the present invention suitable metal used increasing material former, therefore, the present invention has versatility. In addition, the present invention's utilization is covered flat roller and is covered by piece surface when molten metal or molten drop do not solidify completely flat, avoid metal trickling cause surface rough and and Forming Quality difference etc. problem, simplify complete processing, avoid secondary processing and cause piece surface stress relief, cause part deformation, it is to increase forming parts precision.
Further, the present invention is covered flat roller and is adopted polar coordinates mode of motion, therefore, it is particularly suitable for processing some curve being applicable to adopting pole coordinate parameter to describe, spiral of Archimedes, involute urve, spiral-line etc., its control adopts electric machine control, therefore, it is simple that the present invention controls method, working accuracy is relatively high, avoids the step effect that contour surface is shaping, processing quafric curve, during such as the part of the forms such as ellipse, para-curve, hyperbolic line, there is Workpiece fixing convenient, the features such as working accuracy height, it is possible to the effective surface forming quality improving part.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram that the present invention adopts molten drop shower nozzle;
Fig. 2 is the apparatus structure schematic diagram that the present invention adopts laser coaxial powder feeding shower nozzle;
Wherein: 1, profiled member, 2-1, metal molten drop, 2-2, metal-powder, 3-1, molten drop shower nozzle, 3-2, laser coaxial powder feeding shower nozzle, 4, bearing, 5, Worm-gear assembly, 6, worm screw column, 7, guide pillar, 8, column motor, 9, vertical beam motor, 10, vertical beam, 11, crossbeam, 12, crossbeam motor, 13, cover flat roller.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme of the present invention is further described:
As depicted in figs. 1 and 2, the present invention comprises worm screw column 6 and Worm-gear assembly 5, Worm-gear assembly 5 is arranged on worm screw column 6 by bearing 4, worm screw column 6 inside is provided with the guide pillar 7 stretching out worm screw column 6 times ends, and guide pillar 7 stretches out and is also provided with for realizing shaping shower nozzle on one end of worm screw column 6 times ends; Shower nozzle can for providing molten drop shower nozzle 3-1 (see Fig. 1) of metal molten drop 2-1, it is possible to thinking laser coaxial powder feeding shower nozzle 3-2 (see Fig. 2), the top of worm screw column 6 is provided with the column motor 8 that worm screw column 6 can be driven to rotate; Worm screw column 6 drives Worm-gear assembly 5 to rotate (turning direction is such as ��) along worm gear column 6;
Worm-gear assembly 6 is provided with the crossbeam 11 that can move along guide pillar axial direction due, the end of crossbeam 11 is provided with crossbeam motor 12, crossbeam motor 12 can drive crossbeam 11 to move (guide pillar axial direction due is such as Z) along guide pillar axial direction due, and the top of crossbeam 11 is arranged on Worm-gear assembly 5; Crossbeam 11 is provided with the vertical beam 10 that can move along guide pillar radial direction, vertical beam 10 is provided with the vertical beam motor 9 (guide pillar radial direction is such as ��) that vertical beam 10 can be driven along guide pillar radial motion, and the lower end of vertical beam 10 is provided with can freely rotate and can be covered by forming part surface profile and flat covers flat roller 13; And while vertical beam 10 moves to the end of crossbeam, crossbeam moves to the top of worm screw column 5, covers flat roller 13 and moves with polar coordinate mode. Cover flat roller 13 for high rigidity, material nonwettable with molten metal, it is preferable that pottery and graphite.
See Fig. 1, adopting metal molten drop molding mode finished parts, traditional manufacture, due to step effect and metal trickling, causes surface forming quality poor, and shaping rear surface is as shown in II in Fig. 1. When the shower nozzle of the present invention is molten drop shower nozzle 3-1, the present invention adopts covers flat roller 13 forming metal parts, shaping rear surface is as shown in I in Fig. 1, when manufacturing the internal structure of forming part, vertical beam 10 is taken to crossbeam right-hand member by vertical beam motor 9, the i.e. end of crossbeam 11, crossbeam 11 is taken to the top of worm screw column 6 by crossbeam motor 12, covers flat roller 13 like this away from forming part and molten drop shower nozzle 3-1; Ensure moulding process covers the manufacture that flat roller 13 can not affect profiled member 1.
When manufacturing the surface profile of forming part, cover flat roller 13 and it is in a state, column motor 8 drives Worm-gear assembly 5 to rotate in (along �� direction), vertical beam 10 is taken to crossbeam left end (along �� direction) by vertical beam motor 9, the i.e. top of crossbeam 11, crossbeam 11 is taken to worm screw column 6 bottom (along Z-direction) by crossbeam motor 12, the surface contact covering flat roller 13 and forming part can freely rotated like this realizes covering of profiled member 1 surface is flat, due to the Worm-gear assembly 5 of the present invention, the motion of crossbeam 11 and vertical beam 10 is subject to the control of three motors, make to cover flat roller 13 to be covered on profiled member 1 surface and achieve three-dimensional motion at ordinary times.Cover flat roller 13 near molten drop shower nozzle 3-1 and molded surface, rotate by covering flat roller 13, according to the theoretical profile control Forming Quality of profiled member 1 before molten drop does not also solidify. In whole process, molten drop shower nozzle 3-1 has piled up the manufacture of profiled member 1 for generation of metal molten drop 2-1, metal molten drop 2-1 by layer. In addition, the motion covering flat roller 13 is polar coordinates mode of motion, is particularly suitable for processing some curve being applicable to adopting pole coordinate parameter to describe, spiral of Archimedes, involute urve, spiral-line etc., its control method is simple, working accuracy is relatively high, avoids the step effect that contour surface is shaping. Processing quafric curve, during such as the part of the forms such as ellipse, para-curve, hyperbolic line, has Workpiece fixing convenient, the features such as working accuracy height, it is possible to the surface forming quality of effective raising part.
As shown in Figure 2, adopting laser powder molding mode finished parts, its principle is identical with employing metal molten drop molding mode. The difference is that adopt laser coaxial powder feeding shower nozzle 3-2 provide profiled member 1 manufacture need metal-powder 2-2. Adopting laser powder molding mode identical with adopting the principle of metal molten drop molding mode finished parts, working process is also identical.
Processing parameter in forming process, such as sweep velocity, temperature, thickness, laser power, lasing mode etc., the control of processing parameter is the problem increasing manufacture process itself, the effect of the present invention when molten metal or molten drop do not solidify completely, piece surface is covered flat, it is to increase forming parts precision; Simultaneously owing to adopting polar coordinates mode of motion, the part with curved surfaces such as revolution profiles is especially applicable, step effect can be effectively reduced, it is to increase parts quality.
The present invention must increase material manufacturing process with traditional metal and support the use, it is achieved the apparatus structure that this metal increases material manufacturing process can be various, and the core of method utilizes to cover flat roller 13 and surface quality processed in forming process, avoids secondary processing.
Apparatus of the present invention can be used in that molten drop is shaping, laser powder is shaping and electron beam powder metal increases material manufacture, when utilizing metal to increase material forming piece surface profile, when molten metal or molten drop do not solidify completely, flat roller structure is covered in employing, piece surface is covered flat, avoid metal trickling cause surface rough and and Forming Quality difference etc. problem, it is to increase forming parts precision.

Claims (5)

1. one kind controls the device that metal increases material forming surface quality, it is characterized in that: comprise the worm screw column (6) that Worm-gear assembly can be driven to rotate, worm screw column (6) inside is provided with the guide pillar (7) stretching out worm screw column (6) lower end, and guide pillar (7) stretches out and is also provided with for realizing shaping shower nozzle on one end of worm screw column (6) lower end; Described Worm-gear assembly (5) is provided with the crossbeam (11) that can move along guide pillar axial direction due, being provided with the vertical beam (10) that can move along guide pillar radial direction on crossbeam (11), the lower end of vertical beam (10) is provided with can freely rotate and can be covered by forming part surface profile and flat covers flat roller (13);
Described crossbeam (11) is provided with the crossbeam motor (12) that crossbeam (11) can be driven to move along guide pillar axial direction due, and vertical beam (10) is provided with the vertical beam motor (9) that vertical beam (10) can be driven along guide pillar radial motion;
Described worm screw column (6) top is provided with the column motor (8) that worm screw column (6) can be driven to rotate.
2. control metal according to claim 1 increases the device of material forming surface quality, it is characterised in that: described shower nozzle is the molten drop shower nozzle (3-1) that laser coaxial powder feeding shower nozzle (3-2) maybe can provide metal molten drop (2-1).
3. control metal according to claim 1 increases the device of material forming surface quality, it is characterised in that: the described flat roller (13) that covers adopts pottery and graphite to make.
4. control metal according to claim 1 increases the device of material forming surface quality, it is characterised in that: the described flat roller (13) that covers adopts polar coordinates mode of motion.
5. control metal according to claim 1 increases the device of material forming surface quality, it is characterised in that: described Worm-gear assembly (5) is arranged on worm screw column (6) by bearing (4).
CN201410273921.5A 2014-06-18 2014-06-18 A kind of device controlling metal increasing material forming surface quality Expired - Fee Related CN104043832B (en)

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CN105081325B (en) * 2015-08-28 2021-09-24 许昌学院 Metal droplet printing 3D part surface quality control device and control method thereof
EP3796116A3 (en) * 2016-09-15 2021-06-23 IO Tech Group, Ltd. Method and system for additive-ablative fabrication
CN106670463B (en) * 2017-01-13 2020-08-04 山东建筑大学 Solid-phase additive and laser sweeping composite additive manufacturing technology
CN113957430A (en) * 2021-09-29 2022-01-21 西安交通大学 Thermal-ultrasonic blade coating device and blade coating method
CN114343839A (en) * 2021-12-30 2022-04-15 德州环球之光医疗科技有限公司 Treatment pattern conversion method based on adjustable spiral line type laser spots
CN115106541A (en) * 2022-07-19 2022-09-27 季华实验室 Method and apparatus for additive manufacturing

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CN101549404A (en) * 2008-03-31 2009-10-07 杨云峰 Process and equipment for precise spray forming and layer-by-layer rolling repair and manufacturing
CN202742679U (en) * 2012-09-21 2013-02-20 重庆电子工程职业学院 Rapid prototype machine
CN203091747U (en) * 2013-02-28 2013-07-31 江苏永年激光成形技术有限公司 Rapid forming machine of polar coordinate type scanning
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